Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: raid10: wake up frozen array
  md: do not count blocked devices as spares
  md: do not progress the resync process if the stripe was blocked
  md: delay notification of 'active_idle' to the recovery thread
  md: fix merge error
  md: move async_tx_issue_pending_all outside spin_lock_irq

1 files changed, 18 insertions, 11 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 55e7c56045a..40e93967565 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -2507,7 +2507,7 @@ static void handle_stripe_expansion(raid5_conf_t *conf, struct stripe_head *sh,
  *
  */
 
-static void handle_stripe5(struct stripe_head *sh)
+static bool handle_stripe5(struct stripe_head *sh)
 {
         raid5_conf_t *conf = sh->raid_conf;
         int disks = sh->disks, i;
@@ -2717,10 +2717,11 @@ static void handle_stripe5(struct stripe_head *sh)
         if (sh->reconstruct_state == reconstruct_state_result) {
                 sh->reconstruct_state = reconstruct_state_idle;
                 clear_bit(STRIPE_EXPANDING, &sh->state);
-                for (i = conf->raid_disks; i--; )
+                for (i = conf->raid_disks; i--; ) {
                         set_bit(R5_Wantwrite, &sh->dev[i].flags);
-                        set_bit(R5_LOCKED, &dev->flags);
+                        set_bit(R5_LOCKED, &sh->dev[i].flags);
                         s.locked++;
+                }
         }
 
         if (s.expanded && test_bit(STRIPE_EXPANDING, &sh->state) &&
@@ -2754,9 +2755,11 @@ static void handle_stripe5(struct stripe_head *sh)
         ops_run_io(sh, &s);
 
         return_io(return_bi);
+
+        return blocked_rdev == NULL;
 }
 
-static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
+static bool handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
 {
         raid6_conf_t *conf = sh->raid_conf;
         int disks = sh->disks;
@@ -2967,14 +2970,17 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
         ops_run_io(sh, &s);
 
         return_io(return_bi);
+
+        return blocked_rdev == NULL;
 }
 
-static void handle_stripe(struct stripe_head *sh, struct page *tmp_page)
+/* returns true if the stripe was handled */
+static bool handle_stripe(struct stripe_head *sh, struct page *tmp_page)
 {
         if (sh->raid_conf->level == 6)
-                handle_stripe6(sh, tmp_page);
+                return handle_stripe6(sh, tmp_page);
         else
-                handle_stripe5(sh);
+                return handle_stripe5(sh);
 }
 
 
@@ -3692,7 +3698,9 @@ static inline sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *ski
         clear_bit(STRIPE_INSYNC, &sh->state);
         spin_unlock(&sh->lock);
 
-        handle_stripe(sh, NULL);
+        /* wait for any blocked device to be handled */
+        while(unlikely(!handle_stripe(sh, NULL)))
+                ;
         release_stripe(sh);
 
         return STRIPE_SECTORS;
@@ -3811,10 +3819,8 @@ static void raid5d(mddev_t *mddev)
 
                 sh = __get_priority_stripe(conf);
 
-                if (!sh) {
-                        async_tx_issue_pending_all();
+                if (!sh)
                         break;
-                }
                 spin_unlock_irq(&conf->device_lock);
                 
                 handled++;
@@ -3827,6 +3833,7 @@ static void raid5d(mddev_t *mddev)
 
         spin_unlock_irq(&conf->device_lock);
 
+        async_tx_issue_pending_all();
         unplug_slaves(mddev);
 
         pr_debug("--- raid5d inactive\n");